Compressor or motor



June 4 1929 N. A. cHRlsTNsEN 1,715,408

COMPRESSOR 0R MOTOR4 v A Filed June 18, 19.24`

MI TRIM IN VEN TOR.

ATTORNEYS.

compressor cool; r

Patented June 4, 1529. 'p

^ UNITED STAT-E NIELS A. CHRISTENSEN, OF .IMIL'IAUKEE, WISCONSIN.

COMPRESSOR. OR MOTOIRI.y

Application 'led' .Tune 18,

10v of such 'a height'as to insure the proper i amount of lubricant being taken up by the piston but not an excessive amount which v would interfere'with the proper operation of the com ressor.' 15

associate the cooling system of the compressor with lthe lubricating system whereby the lubricant will not only .keep-the working parts well oiledfbut is also used to keep the rIlhe invention further consists in sthe sev .eral features'hereinafter set forthv and more clusion hereof. 25

tional view of a compressor or motor em bodying the invention; l .F ig. 2 is a sectional view through of the device taken on the line 2 2 of Fig. 1. In the drawings the numeral 3 designates the head, 4 the cylinder 5 the crank-case detachably secured to the cylinder, 6 Athe piston Working in'the cylinder and'operatively connected, to the drive shaft 7 in any suitable manner, as by means ofV a connecting-rod 8 journaled on the-wrist-pin 9 and having its big endforming `an eccentric strap mounted on the eccentric'lO secured' to or formed' integral with the shaft 7.

Thehead 3 has a cooling space 11 formed therein Aand an inlet port l2 and a discharge vport `13 fwhich are controlled by valves of well-knownjconstruction, to allow air to be drawn into the compressor and to force said air past the discharge valve to the discharge v passage 14 communicating `with the'. discharge port during theI operation of the compressor. v 'In-orden to lubricate the cylinder walls of vthe compressor independent of a s lash system, which may or may not be provided, I provide' a trough. lcontaining lubricant into which the lower endof the skirt of thel piston dipsin its lowest position, said trough f Vlead to serious trouble. The oil isY contin- A'furthe \object of this invention is to providing a groove in the upper end of the particularly defined by'claims at rthe con-` 'driven b In the drawings: Fig-1 is a vertical sec,

' driving tiecoinpressor,- and forced-by the ythe^head 1924. seriaiNo. 7203821@` -l being constantly supplied and kept lilled with lubricant. v The travel-y of the piston l skirt into .this trough is so determined asl to pro-l Y vide the proper amount of oil to be takenup" 'by said skirt foreach stroke and carried up on the cylinder walls to llubricate the piston l and its rings. Thus a predetermincilquanftity of oil may be supplied 'tothe cylinder bore without danger of an overfsupply which, in the case of a compressor, ini'ghtf uously supplied to the trough by a separate The trough. is conveniently formed.- by

crank-case, the `surplus oil overflowing the inner wall 16 down into the crank-case.

pump; as hereinafter l described or in any f other suitable-mannen The lubricating system for the cylinder. A

Imay also be associated with the compressor to cool 1the same and inithe present 'instance the lubricating oil in the crank-case is taken through a pipe -17 to an oil pump 18, such as a gear pump, of any suitable construction, the engine or other means for pump through a pipe 19 to the cooling space or reservoir 11 in the head of thp fuompressor from whence it overiows, as shown 1n the drawing, lthrough a( duct 20 formed in the tained in the crank-case of the compressor,l which body of lubricant may be that of thev engine with which the compressor is assocapacity. Y I desire it to be understood that this in.

ciated-or that in a separate tankof proper vention is not to be limited to any particular v l arrangement or'constructi'on of parts except in so Vfar as such-l1m1tat1ons are expressed Ein the claims'.

What I claim as my invention is:l

der, of 'means -for supplyinglubricant to said cooling. space, a trough containing lu- 1. In a compressor or motor,"the combil bricant into -which the skirt .of the piston dips when nearing lthe end of itsL7 ontw-stroke, and meansfor vconducting the lubricant from said cooling space to said trough.

- 2. In a compressor or motor, the combination of a cylinder having a' cooling reservoir .inthe heed` and an overflow passage extendv 1 ing through thecylinder directly from l'alcove nishing lubricant to the piston working in 4 said cylinder, and a pnmp supplying lubri cant to said-kcboling reservoir. f l

In testimony whereof,v I afx my signature.

1NIEHS A. CHRISTENSEN. 

